Fuel Injector Replacement

[024rnrSport]

Thinking about fuel injectors.. possibly cleaning until I saw a complete set of Denso(Toyota marked boxes) injectors on Ebay for around 60 bucks for a complete set. They are brown injectors(I personally dont know the color of my originals). What are your thoughts? At that price, it seems too good to be true.

set of 6 Genuine Denso fuel injector for Toyota Tacoma Tundra 4Runner V6 3.4L | eBay

 

[Bad Luck]

Thinking about fuel injectors.. possibly cleaning until I saw a complete set of Denso(Toyota marked boxes) injectors on Ebay for around 60 bucks for a complete set. They are brown injectors(I personally dont know the color of my originals). What are your thoughts? At that price, it seems too good to be true.

set of 6 Genuine Denso fuel injector for Toyota Tacoma Tundra 4Runner V6 3.4L | eBay

Beware of ebay for "genuine/OEM" parts. The majority of them are counterfeits. Use at your own risk!

 

[Tucson4runner]

Brown is the color of the originals, id be skeptical, i went with a new set from motorwest performance for 200 and change. IMO better to be safe then sorry especially with what could happen if one of those were to fail

Denso Fuel Injector Upgrade Set for 3.4L V6 4Runner Tacoma and Tundra – HP831 – MotorWest Performance

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[3bears]

Brown is the color of the originals, id be skeptical, i went with a new set from motorwest performance for 200 and change. IMO better to be safe then sorry especially with what could happen if one of those were to fail

Denso Fuel Injector Upgrade Set for 3.4L V6 4Runner Tacoma and Tundra – HP831 – MotorWest Performance

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those are not new....only new to you...they are reconditioned ( rebuilt).........that said....I too went with those rather than cheap copies. I have been running the motorwest ones now for over a year and no issues.

The price has come down since I got mine. and he used to offer a 60 core on the old ones. if so...that brings price down pretty nice

 

[Tucson4runner]

Sorry, I did mean refurbished, yeah they don't sell new ones

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[19963.4lsr5]

I cleaned and rebuilt my own. You can buy the rebuild kit for them.


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[firemanj92]

Thinking about fuel injectors.. possibly cleaning until I saw a complete set of Denso(Toyota marked boxes) injectors on Ebay for around 60 bucks for a complete set. They are brown injectors(I personally dont know the color of my originals). What are your thoughts? At that price, it seems too good to be true.

set of 6 Genuine Denso fuel injector for Toyota Tacoma Tundra 4Runner V6 3.4L | eBay

Beware of ebay for "genuine/OEM" parts. The majority of them are counterfeits. Use at your own risk!

Brown is the color of the originals, id be skeptical, i went with a new set from motorwest performance for 200 and change. IMO better to be safe then sorry especially with what could happen if one of those were to fail

Denso Fuel Injector Upgrade Set for 3.4L V6 4Runner Tacoma and Tundra – HP831 – MotorWest Performance

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Like others have stated, don't go for the ebay/amazon because of the price. Both sets that I bought from there leaked causing hesitation and backfire issues. Thank god they were cheap enough to replace twice though.

I too went to motowest (purchasing the newer grey denso's)-well worth it.

 

[JRambo]

Brown is the color of the originals, id be skeptical, i went with a new set from motorwest performance for 200 and change. IMO better to be safe then sorry especially with what could happen if one of those were to fail

Denso Fuel Injector Upgrade Set for 3.4L V6 4Runner Tacoma and Tundra – HP831 – MotorWest Performance

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Did same as above in mine after having issues post supercharger. If you are going to do that much work spend the extra money imo ....

 

[19963.4lsr5]

Post 204 starts the injector rebuild. I thought I posted the kit I bought. Sadly I didn’t.

I should have the info somewhere.

It was easy.


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[Dieselchessy]

I cleaned and rebuilt a set of the brown ones. It didn’t smooth out my engine.

I sent a set of the grey to Motorwest to be cleaned and flow matched. ($120) Engine now purrs smoothly.

If I had to do it again I’d just buy the $200 reconditioned upgrade set from Motorwest and be done with it.

96-98 is grey
99-2002 is brown

 

[mtbtim]

Sorry, I did mean refurbished, yeah they don't sell new ones

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But, Martin Diaz, the owner of Motorwest Performance in Southern California offers a lifetime warranty on these Denso injectors. So, it's a pretty safe investment. I've met Martin in person and have corresponded with him many times via phone and email. I can say he's a solid dude and stands behind his products.

The reason why they now sell the Denso injectors and don't refurbish the Aisin OEM injectors anymore is because they noticed internal solenoid defect with them and didn't want to give their customers back injectors that could fail. Martin has total confidence in the Denso injectors and I guess that's why he's offering a lifetime warranty on them.

For those that are interested, here's a video of us swapping injectors on a 3.4 liter V6 in a 1st Gen Tacoma.

<iframe width="560" height="315" src="https://www.youtube.com/embed/N-lhZIWOkyU" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

 

[roger65]

My daughter's 96 3.4 is throwing P0301 code. She has replaced spark plugs and coils/wires-Amazon. Still getting code, runs poorly. I tried the screwdriver listen test and heard injector clicking. Rig has over 200k miles. Not sure if I should just replace the injector or all. Compression has not been checked. Her boyfriend has done the work up to this point. What are the thoughts on the MotorWest vs having the originals gone through by WitchHunter? WH is less than 50 miles away from me.

 

[Tucson4runner]

For those that are interested, here's a video of us swapping injectors on a 3.4 liter V6 in a 1st Gen Tacoma.



<iframe width="560" height="315" src="https://www.youtube.com/embed/N-lhZIWOkyU" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

Used this when I did my injectors on Friday. You guys made it so much easier for me! Knew exactly what I needed and where I was going. Thanks!

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[024rnrSport]

Awesome information. Really appreciated. $200 is still reasonable and it's nice to know it will be well spent.

 

[Dieselchessy]

Which hunter had a considerable lead time on injector service. That’s why I sent mine to Motorwest, their lead time was half of the other outfits, that and they answer the phone and e-mail, and are a few bucks a cheaper.

Easy choice to ship south.

 

[gamefreakgc]

I needed to change my fuel flow and also went with reman'd Toyota ones. They are 3 years old and doing great.

I've also had a pair of injectors rebuilt from Dr. Injector since he's just down the road from where I live. He also did a great job if Witchhunter is too long.

 

[19963.4lsr5]

I needed to change my fuel flow and also went with reman'd Toyota ones. They are 3 years old and doing great.

I've also had a pair of injectors rebuilt from Dr. Injector since he's just down the road from where I live. He also did a great job if Witchhunter is too long.

People that hopped up the 4.7 in the Jeep Grand Cherokee Noticed that there was a difference in fuel trims between bank 1 and bank 2. So they modified the injector rail and paralleled the two cylinder banks and the fuel trims went back to being the same.

Our 3.4 only has one sensor bank. So you will never know if the passenger side cylinders starve for fuel without putting a sensor in each exhaust manifold.

I still don’t get why Toyota didn’t have the left and right cylinder banks split.


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[crestkid]

Just wanted to add my recommendation for Motorwest as well but for their customer service. I did some preventative maintenance and changed out my injectors a ways back with the Motorwest upgrades and kept on throwing a misfire code afterwards. I put the old ones back in and no misfire. Called up Motorwest and it was a super easy, no hassle return. Probably got a random dud but wanted to share that since I would buy from them again if needed.

 

[Bdnewyork]

I went through this in Feb/March, looking for a set of OEM Denso 23250-46050 blue top 312cc air-assist injectors as part of a fuel upgrade for the coming TRD SC install. Spoke with Martin at MotorWest - a forthright and very knowledgeable dude (Props to Tim!).

He said that he very rarely sees these nowadays and had none in stock. He is; however, adapting other OEM injectors, with various flow rates, having designed CNC T6061 aluminum adapter collars to adapt other model Denso, Bosch or Siemens injectors to fit the 5VZFE. At the time, he was offering:

295cc direct fit
315cc direct fit
350cc electrical harness adapter connectors required (double ended for plug and play installation)
400cc electrical harness adapter connectors required (double ended for plug and play installation)

He said the collars can be made with or without air assist passages. Though the pics below show plain aluminum, I believe he's now black anodizing the collars for corrosion resistance. At the time, cost for a set of Denso 315cc from MotorWest was $220, free shipping.

I ultimately went another route, as I found and took a chance on an eBay set from a '97 SC300 w/120k on it for $115 total. The seller was great - retrieved the parts while I was on hold and confirmed the -46050 p/n stamped on the injectors for me. Quality OE parts at a fair price.

Sent them off to Gordon at Witchhunter for refurbishment at a cost of $150. I'm pleased with the end result.

I'd also found these guys in MN that looked like a valid option - they sell direct or on eBay under silvershot_platinum, currently at a discount. Has anybody purchased from them?

OEM Injectors | Fuel Injector Rebuild Service | CS Performance Fuel Injection

Considered FiveO Motorsport too; but they had no stock of the blue Supra/SC300 injectors at the time.

A posting question: I can't get inline image URLs to appear - I've tried Dropbox & Google Photos links - no dice via Chrome or Firefox. Relegated to posting pics as attachments - all piled up at the end. What am I missing? Thanks!

 

[SocalRunner15]

How come the motorwest link says naturally aspirated only? Whats wrong with them in a sc 5vzfe?